Molecular recognition study on supramolecular system(XII) - Molecular recognition of 4-substituted phenols by cyclodextrins and binuclear Cu( II) complexes with cyclodextrins
Document Type
Article
Publication Date
12-1-1997
Abstract
The spectrophotometric titrations have been performed in aqueous solutions with different pH values at 25.0°C to give the stability constants (lgK s) for inclusion complexation of various 4-substituted phenols with α-, β- and γ- cyclodextrins and binuclear copper ( II )-α, β-cyclodextrins complexes. The stoichiometry of the supramolecular complexes formed is 1:1 for all the host cyclodextrins and binuclear copper( II )-cyclodextrins complexes inclusion complexation with various guest 4-substituted phenols. The molecular recognition mechanism for 4-substituted phenols of the cyclodextrins and binuclear Cu( II ) complexes with cyclodextrins is discussed from the viewpoint of the size/shape-fit, multiple recognition, induced-fit relationship between the host cavity and the guest molecules. The results obtained indicate that the binuclear Cu( II ) complex with β-cyclodextrin possesses the special binding ability and molecular selectivity for 4-substituted phenols.
Publication Source (Journal or Book title)
Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities
Recommended Citation
Liu, Y., You, C., Han, B., Li, Y., Li, B., & Chen, R. (1997). Molecular recognition study on supramolecular system(XII) - Molecular recognition of 4-substituted phenols by cyclodextrins and binuclear Cu( II) complexes with cyclodextrins. Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities, 18 (8) Retrieved from https://repository.lsu.edu/ag_exst_pubs/1131